US29304A - Compensating lever-sprincr - Google Patents
Compensating lever-sprincr Download PDFInfo
- Publication number
- US29304A US29304A US29304DA US29304A US 29304 A US29304 A US 29304A US 29304D A US29304D A US 29304DA US 29304 A US29304 A US 29304A
- Authority
- US
- United States
- Prior art keywords
- lever
- pressure
- spring
- sprincr
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000203 mixture Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 210000000988 Bone and Bones Anatomy 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 230000003292 diminished Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/14—Torsion springs consisting of bars or tubes
Definitions
- My invention consists in the production of a spring, which is most sensitive, when sensitiveness is most required, that is when the pressure is the least, and which has an increasing sustaining power as the pressure or weight is increased, and which is also very simple in construction, durable in action, and not liable to get out of order.
- Figure 1 is a representation of my improved spring, when but little pressure is on it.
- Fig. 2 shows its position when the pressure is increased.
- the spring consists or is composed of two levers A, A and Bone straight and the other bent in a circular form and playing against each other.
- the lever A, A is an ordinary lever of the first order, and rests at a, on a diamond or wedge shaped point upon which itturns.
- This lever B has its fulcrum, so to speak, in the torsion steel rod 6, one end of which is fixed to the lever B, and the other end of which is fixed so as to have no motion whatever.
- the point 0, or the place of contact of the two levers A, and B,' is the resistance of fered to the weight or pressure at A, and as will be seen this point is constantly variable, being nearest the fulcrum a, when the pressure is the least, and further removed from it, as the pressure increases.
- the action of the lever A is thus similar to a scale beam, the resistance at 0, moving, like the scale beam poise, nearer to or farther from the fulcrum a, as the pressure on A, is less or greater.
- the power of the torsion rod or spring I should be sufficient to counterbalance any weight that may act on A.
- a small weight at a will however be ample to balance a large one at A. If the lever A, is six inches and the long arm A two feet, and the length of the bent lever B, also six inches, it is found that four hundred pounds at 0, will sustain two tons at A.
- the drawing represents but a single spring or combination of levers. hen applied to a railway or other carriage, there will be four similar springs, two for each axle. For other uses and applications the spring can be readily adapted.
- the object and purpose of the torsion rod or spring 5, is to operate the lever B, or oppose resistance on the long arm A, to the pressure or weight acting at A.
- any other arrangement of spring may be made use of to accomplish the same purpose; or the lever B, may be in itself a spring, with sufficient elasticity or stiffness to furnish the resistance necessary.
- the particular arrangement of parts to offer or furnish the proper resistance, through the lever B, is not material, it being only important, for the purposes of my invention, that the lever B, should, in some way or another, act upon the long arm A, with sufficient force or re sistance to support any pressure that may be applied at A.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Description
W. S. PRATT.
Carriage-Spring.
Pdtented July 24. 1860 zi ilnasses.
FFTQE.
WILLIAM S. PRATT, OF \VILLIAMSBURG, NEW YORK.
GOMPENSATING LEVER-SPRING.
Specification of Letters Patent No. 29,304, dated July 24, 1860.
. To all whom "it may concern:
Be it known that I, \VILLIAM S. PRATT, of lVilliamsburg, State of New York, have invented a new and improved and useful Spring for Railway and other Carriages and for Uses where Springs are Desired; and I do hereby declare that the following is a full, clear, and exact description thereof and of its construction and mode or manner of operation, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification.
My invention consists in the production of a spring, which is most sensitive, when sensitiveness is most required, that is when the pressure is the least, and which has an increasing sustaining power as the pressure or weight is increased, and which is also very simple in construction, durable in action, and not liable to get out of order.
Figure 1 is a representation of my improved spring, when but little pressure is on it. Fig. 2 shows its position when the pressure is increased.
The spring consists or is composed of two levers A, A and Bone straight and the other bent in a circular form and playing against each other. The lever A, A, is an ordinary lever of the first order, and rests at a, on a diamond or wedge shaped point upon which itturns. Upon the short arm A, of this lever the weight or pressure is applied the other end A lying in contact with the bent lever B. This bent lever B has its fulcrum, so to speak, in the torsion steel rod 6, one end of which is fixed to the lever B, and the other end of which is fixed so as to have no motion whatever.
As will be seen, by reference to Fig. 1 when the pressure is but little on the short arm A, the bent lever B, is in contact, nearly at its end, with the arm A, at which time the torsion rod 6, is but little twisted, or nearly in its natural position, and then yields most easily to any action of the arm A, produced by pressure on A. Vhen however the pressure on the short arm A, is increased, and the levers take the position shown in Fig. 2, the length of the lever B, between its fulcrum and the point 0-the point of 0011- tact with the lever Abecomes shortened, and the torsion rod Z), is the more twisted, and ofiers the greatest resistance. It will also be observed that at the time the pressure is the least, and the lever B, the longest, that the length of the lever A, or the distance between the fulcrum a, and the point 0, is the least; but when the pressure is increased, and the lever B, shortened, the length of the lever A is increased; and that in the same proportion that the length of the lever B, is diminished, the length of A, is increased.
The point 0, or the place of contact of the two levers A, and B,'is the resistance of fered to the weight or pressure at A, and as will be seen this point is constantly variable, being nearest the fulcrum a, when the pressure is the least, and further removed from it, as the pressure increases. The action of the lever A, is thus similar to a scale beam, the resistance at 0, moving, like the scale beam poise, nearer to or farther from the fulcrum a, as the pressure on A, is less or greater.
The power of the torsion rod or spring I), should be sufficient to counterbalance any weight that may act on A. A small weight at a, will however be ample to balance a large one at A. If the lever A, is six inches and the long arm A two feet, and the length of the bent lever B, also six inches, it is found that four hundred pounds at 0, will sustain two tons at A.
The drawing represents but a single spring or combination of levers. hen applied to a railway or other carriage, there will be four similar springs, two for each axle. For other uses and applications the spring can be readily adapted.
The object and purpose of the torsion rod or spring 5, is to operate the lever B, or oppose resistance on the long arm A, to the pressure or weight acting at A. Instead however of the torsion rod 6, any other arrangement of spring may be made use of to accomplish the same purpose; or the lever B, may be in itself a spring, with sufficient elasticity or stiffness to furnish the resistance necessary. The particular arrangement of parts to offer or furnish the proper resistance, through the lever B, is not material, it being only important, for the purposes of my invention, that the lever B, should, in some way or another, act upon the long arm A, with sufficient force or re sistance to support any pressure that may be applied at A.
This combination of levers, in addition to their action as and for a spring, furnish also a ready and accurate arrangement or device, by which the extent of any pressure, or the Weight of any load may be quickly ascertained. If a graduated plate be attached to the carriage or vehicle, so that an index or pointer, on the end of the long arm A, will vibrate or oscillate upon it, it Will be readily apparent that any pressure or Weight at A, will be indicated on such graduated plate. This arrangement therefore furnishes a convenient and ready method of Weighing loads, &c., Without the use or inconvenience of platform or other scales.
I do not confine myself to the particular form or arrangement of levers above described, nor to any particular method of causing the lever B, to oppose the resistance 15 required; but
What I claim as my invention and desire to secure by Letters Patent, is
The arrangement and combination of the levers A A and B, substantially as and for 20 the purposes set forth.
WM. S. PRATT.
Witnesses:
S. D. LAW, E. BARNES.
Publications (1)
Publication Number | Publication Date |
---|---|
US29304A true US29304A (en) | 1860-07-24 |
Family
ID=2098961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US29304D Expired - Lifetime US29304A (en) | Compensating lever-sprincr |
Country Status (1)
Country | Link |
---|---|
US (1) | US29304A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4473736A (en) * | 1980-04-10 | 1984-09-25 | Agence Nationale De Valorisation De La Recherche (Anvar) | Plasma generator |
US4482246A (en) * | 1982-09-20 | 1984-11-13 | Meyer Gerhard A | Inductively coupled plasma discharge in flowing non-argon gas at atmospheric pressure for spectrochemical analysis |
US4532219A (en) * | 1984-01-27 | 1985-07-30 | Minnesota Mining And Manufacturing Company | High frequency radiation-induced plasma analysis of volatile or non-volatile materials |
DE3422946A1 (en) | 1984-06-20 | 1986-01-02 | Siemens AG, 1000 Berlin und 8000 München | Method for analysing solids in plasmas, and plasma burner for implementing the method |
US4766287A (en) * | 1987-03-06 | 1988-08-23 | The Perkin-Elmer Corporation | Inductively coupled plasma torch with adjustable sample injector |
US4922608A (en) * | 1987-06-27 | 1990-05-08 | Braun Aktiengesellschaft | Shaving apparatus with a pivoted shearing head system |
US4926021A (en) * | 1988-09-09 | 1990-05-15 | Amax Inc. | Reactive gas sample introduction system for an inductively coupled plasma mass spectrometer |
US5908566A (en) * | 1997-09-17 | 1999-06-01 | The United States Of America As Represented By The Secretary Of The Navy | Modified plasma torch design for introducing sample air into inductively coupled plasma |
US5986757A (en) * | 1997-09-17 | 1999-11-16 | The United States Of America As Represented By The Secretary Of The Navy | Correction of spectral interferences arising from CN emission in continuous air monitoring using inductively coupled plasma atomic emission spectroscopy |
US20040039274A1 (en) * | 2002-04-09 | 2004-02-26 | Spectros Corporation | Spectroscopy illuminator with improved delivery efficiency for high optical density and reduced thermal load |
US20040128296A1 (en) * | 2002-12-28 | 2004-07-01 | Rajasekar Krishnamurthy | Method for storing XML documents in a relational database system while exploiting XML schema |
US20070015981A1 (en) * | 2003-08-29 | 2007-01-18 | Benaron David A | Device and methods for the detection of locally-weighted tissue ischemia |
US20080009689A1 (en) * | 2002-04-09 | 2008-01-10 | Benaron David A | Difference-weighted somatic spectroscopy |
-
0
- US US29304D patent/US29304A/en not_active Expired - Lifetime
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4473736A (en) * | 1980-04-10 | 1984-09-25 | Agence Nationale De Valorisation De La Recherche (Anvar) | Plasma generator |
US4609808A (en) * | 1980-04-10 | 1986-09-02 | Agence Nationale De Valorisation De La Rechere (Anvar) | Plasma generator |
US4482246A (en) * | 1982-09-20 | 1984-11-13 | Meyer Gerhard A | Inductively coupled plasma discharge in flowing non-argon gas at atmospheric pressure for spectrochemical analysis |
US4532219A (en) * | 1984-01-27 | 1985-07-30 | Minnesota Mining And Manufacturing Company | High frequency radiation-induced plasma analysis of volatile or non-volatile materials |
DE3422946A1 (en) | 1984-06-20 | 1986-01-02 | Siemens AG, 1000 Berlin und 8000 München | Method for analysing solids in plasmas, and plasma burner for implementing the method |
US4766287A (en) * | 1987-03-06 | 1988-08-23 | The Perkin-Elmer Corporation | Inductively coupled plasma torch with adjustable sample injector |
US4922608A (en) * | 1987-06-27 | 1990-05-08 | Braun Aktiengesellschaft | Shaving apparatus with a pivoted shearing head system |
US4926021A (en) * | 1988-09-09 | 1990-05-15 | Amax Inc. | Reactive gas sample introduction system for an inductively coupled plasma mass spectrometer |
US5908566A (en) * | 1997-09-17 | 1999-06-01 | The United States Of America As Represented By The Secretary Of The Navy | Modified plasma torch design for introducing sample air into inductively coupled plasma |
US5986757A (en) * | 1997-09-17 | 1999-11-16 | The United States Of America As Represented By The Secretary Of The Navy | Correction of spectral interferences arising from CN emission in continuous air monitoring using inductively coupled plasma atomic emission spectroscopy |
US20040039274A1 (en) * | 2002-04-09 | 2004-02-26 | Spectros Corporation | Spectroscopy illuminator with improved delivery efficiency for high optical density and reduced thermal load |
US6711426B2 (en) | 2002-04-09 | 2004-03-23 | Spectros Corporation | Spectroscopy illuminator with improved delivery efficiency for high optical density and reduced thermal load |
US7062306B2 (en) | 2002-04-09 | 2006-06-13 | Spectros Corporation | Spectroscopy illuminator with improved delivery efficiency for high optical density and reduced thermal load |
US20080009689A1 (en) * | 2002-04-09 | 2008-01-10 | Benaron David A | Difference-weighted somatic spectroscopy |
US20040128296A1 (en) * | 2002-12-28 | 2004-07-01 | Rajasekar Krishnamurthy | Method for storing XML documents in a relational database system while exploiting XML schema |
US20070015981A1 (en) * | 2003-08-29 | 2007-01-18 | Benaron David A | Device and methods for the detection of locally-weighted tissue ischemia |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US29304A (en) | Compensating lever-sprincr | |
US17252A (en) | Self-indicating balance | |
US1332116A (en) | Scale | |
US4014396A (en) | Weighing apparatus | |
US7122A (en) | Dotjgall | |
US299760A (en) | Weighing-scale | |
US30922A (en) | Improvement in platform-scales | |
US28838A (en) | Spring-balance | |
US31534A (en) | Scale-beam | |
US19985A (en) | Platform-scale | |
US299761A (en) | Weighing-scale | |
US23700A (en) | Weighing-scale | |
US3396A (en) | Balance | |
US9170A (en) | Scale eoe | |
US27683A (en) | bill and j | |
US1096096A (en) | Scale. | |
US24161A (en) | Improvement in weighing-scales | |
US2592795A (en) | Weighing scale | |
US181099A (en) | Improvement in weighing-scales | |
US1290278A (en) | Weighing-scale. | |
US1118981A (en) | Scale-tester. | |
US13331A (en) | Augustus sanborn | |
US22244A (en) | Platform-scale | |
US917293A (en) | Weighing-scale. | |
US360073A (en) | wilkinson |